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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14
// TODO: Change to XFAIL once https://github.com/llvm/llvm-project/issues/40340 is fixed
// UNSUPPORTED: availability-pmr-missing
// <memory_resource>
// template <class T> class polymorphic_allocator
// friend bool operator==(const polymorphic_allocator& a,
// const polymorphic_allocator& b) noexcept
#include <memory_resource>
#include <cassert>
#include <vector>
#include "test_macros.h"
int main(int, char**) {
std::pmr::unsynchronized_pool_resource a;
std::pmr::vector<int> vec(&a);
assert(vec.get_allocator() == &a);
static_assert(noexcept(vec.get_allocator() == &a));
// LWG3683 added operator== after C++20. In C++20 operator!= is generated by
// the compiler. Libc++ adds operator!= in C++17 as an extension. MSVC STL
// and libstdc++ have done the same so test this extension unconditionally.
std::pmr::unsynchronized_pool_resource b;
assert(vec.get_allocator() != &b);
static_assert(noexcept(vec.get_allocator() != &b));
return 0;
}
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